Confidence: Medium · Source: FCC ULS · As of 2026-09-12
W6CWK callsign genealogy
Currently held by KOEPKE, CHRISTOPHER W
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by W6CWK's current licensee, walking backwards.
- KOEPKE, CHRISTOPHER WCAgranted 2017-12-20cancelled 2018-04-10
Successor callsigns
Callsigns held now by people who previously held W6CWK.
No current licensee on record previously held this callsign.
All historical holders
Every license row we've seen with the callsign W6CWK, oldest first.
- JOHNSON, VENDIT OR1987-12-01 → cancelled 1999-12-02
- KOEPKE, CHRISTOPHER W CA2018-04-10 active